2008 年 128 巻 10 号 p. 1157-1162
Because the application range of motors for position control is extending in industry, hybrid stepping motors that can realize position control easily have become popular. However, stepping motors have some disadvantages: there is pull-out phenomenon according to load conditions, and low efficiency originates in the iron loss generating. Consequently, a system designer has to choose motor-driver very carefully. In this paper, the high efficiency drive of hybrid stepping motor on wide speed range by vector control, which has no pull-out phenomenon, is proposed. Furthermore, it was shown that lead angle control is equivalent to flux-weakening control, and it was shown that the maximum torque is decided by the maximum voltage, which an inverter generates at high speed. The effect, which suppresses iron loss by flux-weakening control, was checked from the experiment.
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